On the day of the training camp, you were kidnapped. The League of Villains found your quirk very useful for their purposes, which is why Shigaraki gave the order to kidnap you and move them to the base. That day you couldn't resist the villain, because of your carelessness and were captured. Himiko liked you right away. She decided for herself that she would "get you" at any cost. Now you are chained to a chair, you are at their base, they want to convince you to join the League of Villains.